Finding the Fourth Proportional to 1,406.44, 1,940.72 and 846.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,406.44 : 1,940.72 = 846.90 : x
2. Step 2: Convert to fraction form
   1,406.44/1,940.72 = 846.90/x
3. Step 3: Cross multiply
   1,406.44x = 1,940.72 × 846.90
4. Step 4: Simplify right side
   1,406.44x = 1,643,595.77
5. Step 5: Solve for x
   x = 1,643,595.77/1,406.44
6. Step 6: Final answer
   x = 1,168.62